Ointment-machine.



W. 0. KAISER.

OINTMBNT MACHINE.

APPLICATION FILED MAY 1e, 1912.

1,042,923. Patented 0@t.29,1912.

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W. 0. KAISER.

OINTMBNT MACHINE.

PPLIATIO'N FILED MAY 16, 1912. 1,042,923. Patented Oct. 29, 1912.

coLUMBIA PLANQGRAPH |20.. wASHlNuTcN. D. c.

WILLIAM O. KAISER, OF BURLINGTON, IOWA.

OINTMENT-MACHINE.

Specification of Letters Patent.

Patented Oct. 29, 19.12,.

Application filed May 16, 11912."V LSerial N o. 697,728. f

To all whom i may concern: i

Be it known that I, WILLIAM O. KAISER, of Burlington, in the countyv of Des Moines and State of Iowa, have invented certain new and useful Improvements in Ointment- Machines; and I hereby declare that the fol-V lowing is a full, clear, and eXact description thereof, reference being had to the accompanying drawings, which form part of this specification.

This invention is a machine forgrinding and preparing ointments and the like, in which gritty or insoluble matter or chemicals are to be combined with oily or fatty matters or bases to form a smooth ointment free from lumps of any of the incorporated materials.

In particular the invention is an improvement upon the machine shown in my Patent No. 915,864 dated March 231909 and, like such patented machine, may be put to general use in ointment making, but is esn pecially designed for use in the prescription departments of drug stores.

The machine is adapted to receive the roughly mixed materials and crush and grind them into a perfectly smooth ointment, which is delivered in la finished uniform condition.

I will now describe the,a invention in detail with reference to the accompanying drawings, in which- Figure 1 is a side elevation of the comn plete machine, showing the guard pieces and the scraper in inoperative, or cleaning, positions in dotted lines. Fig. 2 is a longitudinal vertical section through the machine. Fig. 3 is a right-hand endA View thereof. Fig. 4 is a top plan view thereof. Fig. 5 is a detail vertical transverse section on line 5 5, Fig. 2, showing the scraper and its holding devices. Fig. 6 isa central vertical transverse section through the machine. y

The frame of the machine is preferably formed of two metallic side members l connected by transverse metal pieces 2. The side members of the frame are provided with upstanding central portions 1al in which are journaled the shafts of two grinding rolls 3 and 4. The rolls 3 and 4 may be of any suitable material,` and are preferably made of ground glass, porcelain or marble.

The shaft 3a of roll 3 maybe mounted in fixed bearings; but the shaft 4a on roll 4 is preferably mounted in slots l in the side menibers of the frame and roll 4 may be `pressed toward roll 3 by means of suitable springs; as shown springl rods 4b are employed, the upper end of said rods pressing against the youter side of the shaft of roll 4a,

the rods; pressing centrally against lugs 1 on the side members l, and the lower end of n the rods being hooked under lugs le on said members, so that the rods will naturally tend to hold the roll 4 in yielding contact with the roll 3.- l

Roll 3 may be rotated by a crank 3b attached to. one end of its shaft, or by any other suitable means; and motion'ma-y be transmitted from roll. 3 to.roll 4 by intermeshing gears 3e, 4e, on the shafts of the rolls. Said gears being preferably of such size that roll 4 is driven more rapidly than roll 3; and approximately about three times as fast as roll 3. v The periphery of roll 4 is held in yielding contact with the periphery of roll 3by the springs 4*?, which will compensate forany wear' ofthe roll surfaces, and insure close contact therebetween.

` In order to direct the material being treated between the rolls, I employ adjustable guard pieces or blocks 5, which are preferably made of glass, marble or pottery like the rolls: Each block is preferablyv beveled on its lower edge so as to approximately t closely between the upper surfaces of the rolls 3 and `4 when adjusted into working position, (see Figs. l, 2, 5,) and each block is^ also tapered inwardly on its upper side as at 5a, so that when the lugs are in position.

over the rolls they form therewith a kind j of hopper into which the material to be treated is placed, and by which, it is directed to and between the rolls and prevented from escaping over the end ofthe rolls. The

'guard piecesor blocks 5- are preferably attached by screws or otherwise to metal arms 5c which are pivoted to the side members of the frame as indicated at 5d; and said arms are provided with lugs 5e which are adapted to engage the side members l and support the blocks in proper working position, as shown in Figs. l, 2 and 4. This; arrangement of the guard pieces or blocks 5 is one important feature of thepresent invention as such blocks can be quickly adjusted to werke ing position as shown in Figs. l, 4, ormay be thrown to the position indicated in dotted lines in Fig. l, in which position they can be lquickly and readily cleaned.

At the outer side of roll 4 is a scraper 6,.

which is preferably formeel of glass or marble or other suitable material; the lower edge of this scraper is preferably concaved for a purpose hereinafter explained and when in working position contacts with the periphery of roll 4. This scraper is preferably mounted in a holder consisting of a metallic plate 6a having its ends 6b bent at right angles so as to fit against the inner faces of the side members 1 of the frame, adjacent the roll-4; and the ends 6b of the holder are pivoted to the members 1 as indicated at 6.

The scraper holder is provided on its upper edge intermediate the ends 6b with inwardly and downwardly bent flanges 6g under which the upper edge of the scraper 6 is inserted, and by which the scraper is removably secured in position in the holder. The plate 6a may have a central lug or handle piece 6h whereby it can be conveniently manipulated.

When the plate 6a is in lowermost position, as indicated in Figs. 2 4, it is pulled downwardby means of suitable springs so as to hold the scraper 6 yieldingly in contact with the periphery of roll 4. As shown helical springs 6? are connected at their lower ends to lugs 1h on the members 1, and at their upper ends to lugs 6 on the end pieces 6b of the scraper frame.

When it is desired to clean the scraper, or to remove and insert a new scraper, the scraper frame may be swung upward to the position indicated in dotted lines in Fig. l, in which position it will also be held by springs 6e. The upward swinging movement of the scraper frame is limited by lugs 6i on the end pieces 6b which will engage the side members 1.

Mounted upon the side members adjacent the roll 3 is a flat plate 7 which may be made of glass, marble or other suitable material; a similar plate 8 is mounted on the side members adjacent and below roll 4.

lIhe materials for the ointment, if desired, may be first placed upon plate 7 and roughly reduced or mixed by a spatula, and then placed in the hopper or between the guard pieces or blocks 5 and rolls 3 and 4, when the blocks are in working position (Fig. 4). The scraper being lowered to position (Fig. 2) the rolls 3 and 4 are rotated so as to turn toward each other, thereby causing the materials placed between them to take up a rolling motion. A thin lm of such materials adheres to each roller, and because of the differences in peripheral speeds of the rollers any small hard insoluble particles in the mixture are crushed or ground and incorporated with the fatty base. The ineness of the grinding may be regulated kby the pressure of the rolls toward each other and the finely ground material will be removed from roll 4 by the scraper 6 and deposited thereby on the table 8.

In order to insure the thorough reduction of the lnass and the deposit of the ground ointment in the center or thereabouts of the plate 8 and to prevent the ointment as it is being ground from escaping over the ends of the roll 4, the edge of the scraper is concaved as shown; a straight edged scraper would remove the material from roll 4 but would not act so well, especially when the materials are soft or run easily; the concaved scraper directs the ointment. toward the center of roll 4 and keeps the ends of the roll clean, and the rotation of the roll 4 causes the ointment to move toward the center of the concave edge of the scraper where it drops off onto table 8 when suliicientI material accumulates to overcome its adhesion to the scraper and roll.

It will be seen that the roll 3 is chamfered on its edges so as to have a somewhat shorter grinding surface than roll 4. This is done so that the material will be all transferred froln roll 3 to roll 4, otherwise some of the material before grinding would gradually squeeze out from the edge of the roll 3; but by making the grinding surface of roll 3 slightly shorter than that of roll 4 all the material will be taken by roll 4 and delivered by the scraper onto table 8.

That I claim is:

1. In an ointment grinding machine, the combination of a pair of grinding rolls and means for rotating said rolls; with a pair of guard pieces adapted to be entered between the upper sides of the rolls, and adjustable supports to which said guard pieces are attached, whereby said guard pieces may be supported in position between the rolls or moved away from such position.

2. In an ointment grinding machine, the combination with a pair of grinding rolls, of an adjustable scraper engaging one of the rolls, said scraper being concaved on its scraping edge, for the purpose described.

3. In an ointment grinding machine, the combination of a pair of grinding rolls, and means for rotating said rolls and an adjustable scraper engaging one of the rolls, said scraper having a concave edge; with a pair of guard pieces adapted to be entered bctween the upper side of the rolls and adjustable supports to which said guard pieces are attached.

4. In an ointment grinding machine, the combination of a frame, a pair of rolls journaled therein, means for pressing one of said rolls yieldingly toward the other, gearing for driving said rolls at different peripheral speeds, and a scraper engaging one roll; with guard pieces adapted to be placed between the rolls and pivoted arms supporting said guard pieces.

5. In an ointment grinding machine, the combination of a pair of grinding rolls, and

means for rotating said rolls; with a pair of n adjustable guard pieces adapted to be entered between the upper sides of the rolls, and adjustable swinging levers to which said guard pieces are attached, substantially as described.

6. In an ointment grinding machine, the combination of a pair of grinding rolls, means for rotating said rolls, a pairof guard pieces adapted to be entered between the upper sides of the rolls, and adjustable swinging levers to which Vsaid guard pieces are attached; with a scraper frame pivoted beside one of the rolls, a scraper mounted in said frame adapted to engage the adjacent roll, and springs for holding the scraper in yielding contact with such roll.l

7. In an ointment grinding machine, the combination of a pair of grinding rolls, a swinging scraper frame pivoted beside one of the rolls, a scraper adjustably mounted in said frame, and springs adapted to hold the scraper frame in operative position with the scraper in yielding Contact with the roll, or

pivoted to the main frame beside one of the rolls; al scraper mounted in said frame and vadapted to engage the adjacent roll, and

springs connected with said frame for holding the frame in operative position with the scraper in yielding contact with such roll; or for holding the scraper frame in inoperative position with the scraper out of contact. with the roll.

In testimony that I claim the foregoing asl my own, I aiiiX my signature in presence of two witnesses.

WILLIAM O. KAISER.

Witnesses:

vMrs. A. M. KAISER, HERBERT O. BACHER.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, v

Washington, D. C. 

